Confidence: Medium · Source: FCC ULS · As of 2026-09-14
WU9I callsign genealogy
Currently held by VAN ABBEMA, CLARENCE
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by WU9I's current licensee, walking backwards.
Successor callsigns
Callsigns held now by people who previously held WU9I.
- Henderson, Thomas BINgranted 2026-04-08
All historical holders
Every license row we've seen with the callsign WU9I, oldest first.
- VAN ABBEMA, CLARENCE MO2000-07-28 → cancelled 2012-08-08
- Henderson, Thomas B IN2014-03-18 → cancelled 2016-07-06
- Ferrier, Dale A TX2018-07-27 active